*- Dynamic pool sizing for WebP and Katex based on CPU count
- WebP decode: use RGB (3 bytes) for opaque images instead of RGBA (4 bytes)
- Add new imaging.config with new encoder method option; this is default 4 (what we had before), if have tested with value 2 for a 30% speedup on my MacBook, but that does sacrifice quality in some cases (quality/speed trade-off 0-6)
- Track hasAlpha in decode response to enable RGB optimization
- Scale image processing workers (1->2) on high-core machines
- Add WebP benchmark test
On my MacBook Pro M1 Pro, I now get these numbers compared to Hugo v0.152.0:
```
goos: darwin
goarch: arm64
pkg: github.com/gohugoio/hugo/internal/warpc
cpu: Apple M1 Pro
│ cmp152.bench │ fix-webpbench.bench │
│ sec/op │ sec/op vs base │
Webp-10 162.6m ± 32% 145.3m ± 21% -10.60% (p=0.026 n=6)
│ cmp152.bench │ fix-webpbench.bench │
│ B/op │ B/op vs base │
Webp-10 41.69Mi ± 0% 123.79Mi ± 0% +196.92% (p=0.002 n=6)
│ cmp152.bench │ fix-webpbench.bench │
│ allocs/op │ allocs/op vs base │
Webp-10 9.963k ± 3% 18.797k ± 2% +88.67% (p=0.002 n=6)
```
For general image resize benchmarks compared to Hugo v0.152.0 (note that that's not the result of this branch):
```bash
goos: darwin
goarch: arm64
pkg: github.com/gohugoio/hugo/resources/images
cpu: Apple M1 Pro
│ cmp152.bench │ fix-webpbench.bench │
│ sec/op │ sec/op vs base │
ImageResize-10 84.12m ± ∞ ¹ 40.70m ± ∞ ¹ -51.61% (p=0.029 n=4)
¹ need >= 6 samples for confidence interval at level 0.95
│ cmp152.bench │ fix-webpbench.bench │
│ B/op │ B/op vs base │
ImageResize-10 32.37Mi ± ∞ ¹ 29.25Mi ± ∞ ¹ -9.64% (p=0.029 n=4)
¹ need >= 6 samples for confidence interval at level 0.95
│ cmp152.bench │ fix-webpbench.bench │
│ allocs/op │ allocs/op vs base │
ImageResize-10 11.34k ± ∞ ¹ 12.03k ± ∞ ¹ +6.07% (p=0.029 n=4)
¹ need >= 6 samples for confidence interval at level 0.95
```
Closes#14370
Go's stdlid now has a maps package, which is very useful. We have been using imports on the form `xmaps "maps"`, but auto import tools doesn't handle this, which is annoying.
I have been thinking about this for some time, but have been holding back because of all the import changes. However, now is a good time to do this, with very little unmerged code.
The original idea of setting quality to 0 for lossless WebP was didn't allow a setting that made sense for both JPEG and WebP.
Note that the above didn't really work at all, so this should not break anything.
* Move the error handling into commons and make sure the error returned also returns message errors
* Make the protocol version an int so it can be more easily compared
* Make throwOnError=true the new default
* Handle JS errors as part of the RPC request/response flow
* Return a new Result type with .Err on it
This enables constructs on the form:
```handlebars
{{ with transform.ToMath "c = \\foo{a^2 + b^2}" }}
{{ with .Err }}
{{ warnf "error: %s" . }}
{{ else }}
{{ . }}
{{ end }}
{{ end }}
```
Note that the new `Result` type behaves like `template.HTML` (or a string if needed) when printed, but it will panic if in a error state.
Closes#12748
While very useful on its own (and combined with the passthrough render hooks), this also serves as a proof of concept of using WASI (WebAssembly System Interface) modules in Hugo.
This will be marked _experimental_ in the documentation. Not because it will be removed or changed in a dramatic way, but we need to think a little more how to best set up/configure similar services, define where these WASM files gets stored, maybe we can allow user provided WASM files plugins via Hugo Modules mounts etc.
See these issues for more context:
* https://github.com/gohugoio/hugo/issues/12736
* https://github.com/gohugoio/hugo/issues/12737
See #11927
Bjørn Erik Pedersen